<DIV>hi ,</DIV>
<DIV>what i have to do to reproject a raster that is in a different projection to current location´s projection?</DIV>
<DIV>i have to quit the location an then import this raster in another location whith the desired projection?</DIV>
<DIV>thanks</DIV>
<DIV>samuel<BR><BR><B><I>Radim Blazek <blazek@itc.it></I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">For me it works.<BR>v.mkgrid map=pok grid=3,2 position=region<BR>v.extract input=pok output=pok2 type=area list=4<BR>...<BR>Number of boundaries: 8<BR>Number of centroids : 1<BR>...<BR><BR>Radim<BR><BR>Dylan Beaudette wrote:<BR>> Radim,<BR>> <BR>> Thanks for the idea... but doing v.extract type=area leaves me with only the <BR>> centroids for each grid cell...<BR>> <BR>> is there anyway to convert a set of line segments into a polygon?<BR>> <BR>> thanks!<BR>> <BR>> Dylan<BR>> <BR>> On Thursday 27 January 2005 12:14 am, Radim Blazek wrote:<BR>> <BR>>>Use v.extract type=area<BR>>><BR>>>Radim<BR>>><BR>>>Dylan Beaudette wrote:<BR>>><BR>>>>On Wednesday 26 January 2005 06:09 pm, Hamish wrote:<BR>>>><BR>>>>>>I have used v.mkgrid (GRASS6-CVS) in the past to make vector
grids,<BR>>>>>>and all has been well.<BR>>>>><BR>>>>>..<BR>>>>><BR>>>>><BR>>>>>>However, this morning I tried to extract a single square from the<BR>>>>>>output from v.mkgrid, and was only able to get either a single<BR>>>>>>centroid (almost correct), or the entire boundary (not good). Since<BR>>>>>>the boundaries do not have CATs, there is no way for me to extract a<BR>>>>>>single boundary...<BR>>>>><BR>>>>>..<BR>>>>><BR>>>>><BR>>>>>>Any ideas?<BR>>>>><BR>>>>>what about<BR>>>>><BR>>>>> v.category type=boundary option=add<BR>>>>><BR>>>>>to add category numbers to the boundaries?<BR>>>><BR>>>>Thanks! ... this gives the boundaries CATs... but for some reason, each<BR>>>>grid square!
is made
up of about 8 line segments (3 for top and bottom<BR>>>>lines, 1 for each vertical line)...<BR>>>><BR>>>>My hope is that i can make each grid "cell" into a discreet polygon, that<BR>>>>can be used to set the region -- i.e. so that i can accurately subsample<BR>>>>a larger map.<BR>>>><BR>>>>thanks!<BR>> <BR>> <BR><BR></BLOCKQUOTE><p>
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